<template>
	<view class="login-container">
		<uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
		<button type="primary" class="btn-login" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>
		<text class="tips-text">登录后尽享更多权益</text>
	</view>
</template>

<script>
	import {
		mapMutations,
		mapState
	} from 'vuex'
	export default {
		data() {
			return {

			};
		},
		computed: {
			...mapState('m_user', ['redirectInfo'])
		},
		methods: {
			...mapMutations('m_user', ['updateUserInfo', 'updateToken', 'updateRedirectInfo']),
			// 用户授权之后，获取用户的基本信息
			getUserInfo(e) {
				console.log(e)

				if (e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权！')

				console.log(e.detail.userInfo)
				this.updateUserInfo(e.detail.userInfo)

				this.getToken(e.detail)
			},
			async getToken(info) {
				// 获取 code 对应的值
				const [err, res] = await uni.login().catch(err => err)

				if (err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败！')

				// 准备参数
				const query = {
					code: res.code,
					encryptedData: info.encryptedData,
					iv: info.iv,
					rawData: info.rawData,
					signature: info.signature
				}

				const {
					data: loginResult
				} = await uni.$http.post('/api/public/v1/users/wxlogin', query)
				if (loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')

				// 直接把 token 保存到 vuex 中
				this.updateToken(loginResult.message.token)
				this.navigateBack()
			},
			navigateBack() {
				if (this.redirectInfo && this.redirectInfo.openType === 'switchTab') {
					uni.switchTab({
						url: this.redirectInfo.from,
						complete: () => {
							this.updateRedirectInfo(null)
						}
					})
				}
			}

		},
	}
</script>

<style lang="scss">
  .login-container {
    height: 750rpx;
    background-color: #F8F8F8;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;

    &::after {
      content: ' ';
      display: block;
      width: 100%;
      height: 40px;
      background-color: white;
      position: absolute;
      bottom: 0;
      left: 0;
      border-radius: 100%;
      transform: translateY(50%);
    }

    .btn-login {
      width: 90%;
      border-radius: 100px;
      margin: 15px 0;
      background-color: #C00000;
    }

    .tips-text {
      font-size: 12px;
      color: gray;
    }
  }
</style>
